The second paragraph using unattributed text directly from Gartner's website.

See http://www.gartner.com/pages/story.php.id.8795.s.8.jsp.

From the website:

"Since 1995, Gartner has used Hype Cycles to characterize the over-enthusiasm or "hype" and subsequent disappointment that typically happens with the introduction of new technologies (see Understanding Gartner's Hype Cycles) for an introduction to the Hype Cycle concepts). Hype Cycles also show how and when technologies move beyond the hype, offer practical benefits and become widely accepted." —Preceding unsigned comment added by 98.216.32.57 (talk) 15:15, 14 November 2008 (UTC)

This citation seems to be deleted now, but table with the explanation of the 5 phases is a verbatim copy from the same page! Minderdl (talk) 10:05, 5 September 2014 (UTC)

I removed the "Advert" warning tag, as there is a clear "Criticisms" section which is well thought out. On a beginner's first reading, it does not seem advertorial. I understood the concept was invented by Gartner, and their mention in the headline paragraph seems reasonable. DouglasHeld (talk) 08:32, 28 August 2014 (UTC)